Frequency Domain Imbalance Estimation in Heterodyne Multimode/Band Receivers with Baseband Automatic Gain Control

• DENNO Satoshi

  Graduate School of Natural Science and Technology, Okayama University

• LIU Ke

  Graduate School of Informatics, Kyoto University

• FURUNO Tatsuo

  NTT DoCoMo, Inc.

• MORIKURA Masahiro

  Graduate School of Informatics, Kyoto University

抄録

This paper proposes a novel scheme called as“frequency domain imbalance estimation” that estimates the imbalance of the Hilbert transformer in heterodyne multimode/band receivers with baseband automatic gain control (AGC). The proposed scheme uses correlation matrices in the frequency domain. This enables the receivers to keep high transmission performance in spite of the imbalance of the analog Hilbert transformer, by offsetting the imbalance. Moreover, the baseband AGC relaxes the requirement of the baseband A/D converter. The performance of imbalance estimation and imbalance cancellation is verified by computer simulation. As a result, it is shown that the proposed scheme not only estimates the imbalance of Hilbert transformer with extremely high precision, but also cancels the image-band interference such that it achieves the theoretical performance.

収録刊行物

• IEICE Transactions on Communications

  IEICE Transactions on Communications E96.B (1), 271-280, 2013

  一般社団法人 電子情報通信学会

キーワード

• cognitive radio
• multimode/band receiver
• image-band interference
• heterodyne receiver
• AGC

詳細情報

• CRID: 1390001204375380864
• NII論文ID: 10031167211
• NII書誌ID: AA10826261
• DOI: 10.1587/transcom.e96.b.271
• ISSN: 17451345
• ISSN: 09168516
• Web Site: https://www.jstage.jst.go.jp/article/transcom/E96.B/1/E96.B_271/_pdf
• 本文言語コード: en
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